<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<!-- 将容器里面的内容全部设置为红色，就可以用到div -->
	<div style="color:#f40">
		<strong>举个例子</strong><br/>
		<em>举个例子</em><br/>
		<del>举个例子</del>
	</div>	
</body>
</html>